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JavaScript实现钟表

时间:2021-07-01 10:21:17 帮助过:5人阅读

[html]

<html> 
<head> 
<script type="text/javascript"> 
function startTime() 
{ 
var today=new Date() 
var h=today.getHours() 
var m=today.getMinutes() 
var s=today.getSeconds() 
// add a zero in front of numbers<10 
m=checkTime(m) 
s=checkTime(s) 
document.getElementById('txt').innerHTML=h+":"+m+":"+s 
t=setTimeout('startTime()',500) 
} 
 
function checkTime(i) 
{ 
if (i<10)  
  {i="0" + i} 
  return i 
} 
</script> 
</head> 
 
<body onload="startTime()"> 
<div id="txt"></div> 
</body> 
</html>

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